JP4573619B2 - Wood crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wood crusher capable of easily taking out a foreign matter in a hopper. <P>SOLUTION: This wood crusher is equipped with a crusher body frame 36, a crushing device 12 provided on the crusher body frame 36, a feed conveyor 11 provided on the rear side of the crusher body frame 36 and having a drive wheel 40, a follower wheel 41 and an endless feed body 42 wound around the drive wheel 40 and the follower wheel 41 to be circulated and driven and feeding wood to be crushed to the crushing device 12, and the hopper 10 having the side wall bodies 16 provided on both sides in the width direction of the feed conveyor 11 and a rear wall body 14 provided on the rear side of the feed conveyor 11 having a height almost same as that of the feed surface 39 of the feed body 42 of the feed conveyor 11. <P>COPYRIGHT: (C)2006,JPO&amp;NCIPI

Description

  The present invention relates to a wood crusher for crushing pruned branch materials / thinned wood, branch wood, waste wood, etc., for example, a wood crusher that crushes an object to be crushed by rotating a crushing rotor.

  For example, pruned branches / thinned wood generated when pruning timber harvested in forests, branch timber generated in creation / green space maintenance management, or waste wood used in wooden houses is usually the final In general, it is treated as industrial waste. The wood crusher is used for the purpose of reducing the volume of crushed wood as waste in such a waste treatment process, or fermenting crushed timber (wood chips) after pulverization and reusing it as organic fertilizer. The crushed wood is crushed into a predetermined size.

  As this kind of wood crusher, a crushing device equipped with a crushing rotor that crushes the wood to be shredded by rotation, a feed conveyor (carrying means) that transports the wood to be shredded to the crushing device side in a substantially horizontal direction, A side wall body standing on both sides in the width direction of the conveyor and a rear wall body standing on the rear side (opposite side of the crushing apparatus) of the feed conveyor and having a height higher than the transport surface of the feed conveyor, to be shredded wood There is a thing provided with a bottomed hopper which accepts (for example, refer to patent documents 1 etc.).

JP 2004-188362 A

  In the crushing operation, when the material to be crushed is put into the hopper, for example, hard wood or metal that is difficult to crush may be mixed with the material to be crushed. In such a case, it is necessary to stop the conveyance to the crushing apparatus and take out the wood and foreign matter from the hopper. At this time, in the above prior art, for example, even if the feed conveyor is reversed to try to discharge wood or foreign matter that is difficult to crush from the rear of the hopper, it is blocked by the rear wall body and cannot be discharged from the hopper. For this reason, an operator has to enter the hopper and manually remove wood and foreign matter, which requires time and labor.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a wood crusher that can easily take out foreign matters in a hopper.

(1) In order to achieve the above object, the present invention provides a main body frame, a crushing device provided on the main body frame, a longitudinal side of the main body frame, a driving wheel, a driven wheel, and these A feed conveyor that is wound around a drive wheel and a driven wheel and is driven to circulate in the forward and reverse directions, feeds the crushed wood to the crushing device, and both sides of the feed conveyor in the width direction In the wood crusher provided with the provided side wall body and the hopper having the rear wall body provided on the rear side of the feed conveyor, the crushing rotor constituting the crushing device has a crushing bit provided on an outer peripheral portion thereof. The axis of the rotation axis is arranged along the width direction of the main body frame so as to face the crushed wood conveyed by the feed conveyor, and at the rear end of the hopper, the conveyance surface of the conveyance body of the feed conveyor Ho A wall body after the same height, and the support member horizontally extends between the side walls in the upper of the rear wall, the hanging support member being supported, by receiving the crushed pieces flying from the crushing apparatus A flexible member that prevents leakage from the rear of the hopper to the outside, and allows discharge of hard wood and foreign matter conveyed rearward when the feed conveyor is reversed to the outside of the hopper And the support members horizontally mounted between the side wall bodies are respectively attached to upper portions of the left and right widened portions provided in a widened shape upward from the side wall bodies. .

  In this invention, the conveyance surface of the conveyance body of a feed conveyor and the rear wall body of a hopper are comprised in the substantially same height. In this way, when foreign materials such as hard wood or metal that are difficult to break are thrown into the hopper during the crushing operation, the hard wood and foreign materials are discharged from the rear of the hopper by driving the feed conveyor in the reverse direction. Is possible. Therefore, it is possible to easily remove wood and foreign matters that are difficult to crush, compared to the above-described conventional technique in which an operator has to enter the hopper and manually remove the wood and foreign matters. As a result, since the interruption time of the crushing operation can be shortened, the production efficiency of the crushed material can be improved.

  In the present invention, since the flexible member is usually suspended and supported on the rear wall body by the support member, for example, the crushed pieces flying from the crushing device side during the crushing operation are received by the flexible member. It is possible to prevent discharge from the rear of the hopper to the outside. On the other hand, as described in (1) above, when wood or foreign matter that is difficult to crush is introduced and the feed conveyor is reversed, the flexible member can be pressed by being pushed by the wood or foreign matter conveyed to the rear of the hopper. It deforms flexibly and does not prevent the wood and foreign matter from being discharged from the rear part of the hopper to the outside through the upper part of the rear wall body. Therefore, according to the present invention, it is possible to prevent leakage of a crushed piece or the like during the crushing operation while not hindering foreign matter discharge.

According to the present invention, the transport surface of the transport body of the feed conveyor and the rear wall body of the hopper are almost at the same height, so that the foreign matter in the hopper can be easily removed from the rear of the hopper by driving the feed conveyor in the reverse direction. It can be taken out. In addition, since the flexible member is suspended and supported on the rear wall body by the support member, for example, the crushed pieces flying from the crushing device side during the crushing operation are received by the flexible member, and the outside from the rear of the hopper to the outside. When it is possible to prevent the material from being discharged, and when wood or foreign matter that is difficult to crush is thrown in and the feed conveyor is reversed, the flexible member is pressed by the wood or foreign matter conveyed to the rear of the hopper. Since it deforms flexibly and does not prevent the wood and foreign matter from being discharged from the rear of the hopper to the outside through the upper part of the rear wall body, the fragments during the crushing operation etc. Leakage can be prevented.

Hereinafter, an embodiment of a wood crusher of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing the overall structure of an embodiment of a wood crusher of the present invention, FIG. 2 is a plan view of an embodiment of the wood crusher of the present invention shown in FIG. 1, and FIG. It is a side view showing the detailed structure inside the side cover near the crushing device. In the following, the directions corresponding to the left and right in FIG. 1 are the rear and front of the wood crusher, or one and the other.

  1 to 3, reference numeral 1 denotes a traveling body that enables self-running, 2 denotes a crushing function component that crushes the wood to be shredded provided on the traveling body 1, and 3 denotes this crushing function component 2. The discharge conveyor that transports the crushed material crushed in step 1 and discharges it outside the machine. 4 is a power unit (power unit) equipped with the power source (engine) of each mounted device. The body 1, the crushing function component 2, the discharge conveyor 3, the power unit 4, and the like are roughly configured.

  The traveling body 1 includes a track frame 5, drive wheels 6 and driven wheels 7 provided at both front and rear ends of the track frame 5, and a drive device (travel hydraulic motor) in which an output shaft is connected to the shaft of the drive wheel 6. 8 and a crawler belt (endless track crawler) 9 wound around the drive wheel 6 and the driven wheel 7. A main body frame 36 is provided on the track frame 5. The main body frame 36 supports the crushing function component 2, the discharge conveyor 3, the power unit 4, and the like.

  The crushing function component 2 is introduced by a hopper 10 that receives the crushed wood to be input, a feed conveyor 11 as a means for conveying the crushed wood accommodated in the hopper 10, and the feed conveyor 11. A crushing device 12 for crushing the wood to be crushed (see FIG. 3 and the like later), and a press conveyor device 13 for pressing the wood to be crushed introduced into the crushing device 12 in front of the crushing device 12 against the feed conveyor 11 (the following diagram) 3).

  4 is a side view showing a detailed structure in the vicinity of the rear end of the hopper 10, FIG. 5 is a cross-sectional view taken along line VV in FIG. 4, and FIG. 6 is a front view of the hopper 10 viewed from the rear. In the figure, the same reference numerals are given to the same parts as those in the previous drawings, and the description will be omitted. However, in FIG. 4, the state which removed the outer wall body 15 mentioned later is shown in figure.

  4 to 6, the hopper 10 is formed in a bottomed shape, is provided substantially horizontally on the rear side of the crushing rotor 61 (described later) on the main body frame 36, and is provided on the rear side of the feed conveyor 11. A plurality of members are provided on the rear wall body 14, the outer wall bodies 15 on the left and right sides in the width direction, and on both sides in the width direction of the feed conveyor 11 inside the outer wall body 15, so that a gap is secured between the outer wall bodies 15. A side wall body 16 configured in an L-shape, and a widening portion (tilting portion) 17 provided in a shape of widening upward so as to span over the outer wall body 15 and the upper portion of the side wall body 16; On the lower side of the feed conveyor 11, a bottom wall body 18 provided on the entire bottom surface with a slight gap therebetween, and a front wall body 19 (see FIG. 3) at the front side end portion are provided. The upper end portion 14a of the rear wall body 14 is set at substantially the same height as a transport surface 39 of the feed conveyor 11 (upper surface of a transport body 42 described later, see FIG. 7), and the upper end of the front wall body 19 is fed. It is set to be slightly lower than the conveying surface 39 of the conveyor 11.

  The hopper 10 is supported above the rear wall body 14 by being suspended between the side wall bodies 16, 16 (expanded portions 17, 17) on both sides in the width direction, and the support member 37. And a rubber plate (flexible member) 38. The rubber plate 38 is suspended so that the lower end portion thereof is in contact with the upper end portion 14a of the rear wall body 14 (or through a slight gap). Accordingly, even when the crushed pieces fly above the rear wall body 14 during the crushing operation, the crushed pieces are received by the support member 37 and the rubber plate 38 and can be prevented from spilling outside from the rear of the hopper 10. Yes.

  FIG. 7 is a cross-sectional view taken along the arrow VII-VII in FIG. 6 showing the detailed structure of the rear end portion of the feed conveyor 11. In this figure, the same parts as those in the previous drawings are given the same reference numerals for explanation. Omitted. In FIG. 7, the support member 37 and the rubber plate 38 are not shown.

  In the present embodiment, the bottom wall 18 of the hopper 10 is divided into a fixed portion 20 and an opening / closing portion 21 located at the rear end. The fixing part 20 is fixed to the side wall body 16, whereas the opening / closing part 21 is fixed to the rear wall body 14. Although not shown in FIG. 7, a pin 23 is provided on the upper end portion of the rear wall body 14 via a bracket 22, and the rear wall body 14 has a side wall body with the pin 23 as a fulcrum. 16 (see FIG. 6 and FIG. 9 described later). As a result, the opening / closing part 21 fixed to the rear wall body 14 rotates together with the rear wall body 14 so that the rear end part of the bottom wall body 18 can be opened and closed. In addition, on the opening / closing part 21, a guide member 35 formed in an arc shape so as to follow the trajectory of the rear end part of the feed conveyor 11 through a slight gap is provided, and the wood to be crushed is fed into the feed conveyor 11. Preventing entry into the space behind.

  Reference numerals 24 and 25 denote lock mechanisms for holding the opening / closing portion 21 in a closed state. The lock mechanism 24 is provided on the rear end surface of the beam 26 that is passed to the rear end portion of the bottom of the L-shaped side wall body 16. They are respectively provided on the upper surface of the bottom of the side wall body 16 at a position slightly ahead of the lock mechanism 24.

  8 (a) and 8 (b) are detailed views of the locking mechanism 24 as seen from the same direction as FIG. 7. In these drawings, the same parts as those in the previous drawings are denoted by the same reference numerals. Description is omitted. Although detailed description is omitted, the configuration of the lock mechanism 25 is the same as that of the lock mechanism 24.

  8A and 8B, the lock mechanism 24 includes a support plate 28 fixed to the beam 26 by a plurality of bolts 27, and two brackets provided on the support plate 28 at a predetermined interval. 29, a pin 30 inserted through the bracket 29, a handle 31 provided substantially perpendicular to the outer periphery of the pin 30, a locking member 32 for locking the handle 31, and a lower end portion of the rear wall body 14 And a bracket 33 fixed to.

  With this configuration, the pin 30 is inserted into the bracket 33 on the rear wall body 14 side and the handle 31 is locked between the bracket 29 and the locking member 32 as shown in FIG. The rear wall body 14 is fixed to the side wall body 16 via the pin 30 and the opening / closing part 20 of the bottom wall body 18 is held in a closed state. On the other hand, the pin 30 is rotated to a position where the handle 31 is substantially horizontal, the pin 30 is slid through the notch portion of the locking member 32, and the pin 30 is removed from the bracket 33 as shown in FIG. 8B. As a result, the restriction between the rear wall body 14 and the side wall body 16 is released. In this example, since another lock mechanism 25 is provided, similarly, the lock mechanism 25 side is completely unconstrained by removing the pin from the bracket provided on the open / close portion 20 side. The opening / closing part 20 can be opened and closed. A state in which the opening / closing part 20 is opened is shown in FIG. 9 in association with FIG. In FIG. 9, the bracket 22 and the pin 23 are illustrated for easy understanding. By setting it as this state, when the wood piece stays in the hopper 10, it can be easily discharged at the time of maintenance or the like.

  Reference numeral 34 denotes a retainer that prevents the pin 30 from falling off. The retainer 34 is provided on the outer peripheral portion of the pin 30 so as to be positioned between the brackets 29 and 29. In this example, the retainer 34 is provided at a position where it abuts against the inner and outer brackets 29 when the lock shown in FIG. 8A is locked and when the lock shown in FIG. Limited to length.

  The feed conveyor 11 includes a sprocket-like drive wheel 40 (see FIG. 3) provided on the crushing rotor 61 (described later) side and a slave provided on the opposite side (wood crusher rear side, rear wall body 14 side). A plurality of rows (4 rows in this example, see FIG. 2) arranged in the width direction are wound between the driving wheels 41 (see FIG. 7 and the like) and the driving wheels 40 and the driven wheels 41 provided at both ends in the conveying direction. Transported bodies (conveying belts, chain belts) 42 are provided. The transport body 42 is not shown in FIG. 3 and FIG. 11 and FIG.

  The driven wheel 41 is supported by a bearing 43 (see FIG. 4) provided on the outer wall surface of the rear portion of the side wall body 16 of the hopper 10, and the driving wheel 40 is positioned substantially on the same plane on the front side of the side wall body 16. It is supported by a bearing 46 (see FIG. 10 described later) provided on the outer wall surface of the side cover 45 (described later) of the crushing device 12 provided. As a result, the feed conveyor 11 extends from the lower part of the hopper 10, that is, from the inside of the side wall body 16 of the hopper 10 to the vicinity of the crushing rotor 61 (described later), and extends substantially horizontally to cover the side surfaces of the hopper 10 and the crushing device 12. 45 (described later).

FIG. 10 is a side view of the vicinity of the crushing device 12, and FIG. 11 is a cross-sectional view showing the internal structure in detail. .
10 and 11, 45 is a side cover of the crushing device 12 provided in front of the hopper 10, and 46 is a bearing of the feed conveyor 11 provided on the outer wall surface of the side cover 45. The rotation axis of the drive wheel 40 of the feed conveyor 11 is a drive device 49 (not shown here, see FIG. 19 used later) provided below the bearing 46 in the width direction. 49).) Is coupled via a coupling or the like. The feed conveyor 11 is configured to circulate and drive the transport body 42 between the drive wheel 40 and the driven wheel 41 by driving the drive device 49 to rotate. As shown in FIG. 11 (see also FIG. 3), the bottom wall body 18 of the hopper 10 described above extends to the lower side of the drive wheel 40, and its tip end faces the side cover 45. Yes.

  47 is a guide member that is bent so as to be close to the rotation trajectory of the drive wheel 40, and is connected to the bottom wall body 18 and the front wall body 19 of the hopper 10, and 48 is slightly lower than the rotation trajectory of the drive wheel 40 and The scraper is disposed on the upper portion of the front wall body 19 so that the end facing the drive wheel 40 is as close as possible to the rotation locus of the drive wheel 40. The end portions in the width direction of the guide member 47 and the scraper 48 are fixed to the side cover 45 of the crushing device 12.

  The aforementioned press conveyor device 13 is provided so as to face the transport surface (upper surface) 39 of the feed conveyor 11 that transports the wood to be crushed so as to be close to the rear side of the crushing rotor 61 (described later). The pressing conveyor device 13 has a rotating shaft 51 (see FIG. 3) supported by a crusher side cover 45 by a bearing 50 (see FIG. 11) so that it can rotate in a vertical plane (in the vertical direction). A support member 52 supported so as to be swingable and a presser roller 53 provided so as to be rotatable with respect to the support member 52 are provided.

  The support member 52 includes an arm portion 54 that includes a rotation shaft 51 and a bracket portion 55 that is provided on the distal end side of the arm portion 54 and supports the pressing roller 53. The lower end surface of the arm portion 54 is formed to be curved in an arc shape, and a curved plate 68 constituting a part of a crushing chamber 60 described later is attached to the curved portion. On the other hand, the attachment portion of the pressing roller 53 in the bracket portion 55 is formed in an arc shape having a smaller diameter than the pressing roller 53, and the outer peripheral surface of the pressing roller 53 protrudes from the bracket portion 55. The dimension of the press roller 53 in the width direction (the direction orthogonal to the paper surface in FIG. 3) is set to be equal to or larger than the width of the transport surface 39 of the feed conveyor 11.

  3 and 11, 56 and 57 are stoppers for restricting the rotation operation of the presser conveyor device 13. When the presser roller 53 is lowered to the proximity position of the drive wheels 40 of the feed conveyor 11, It arrange | positions inside the crusher side cover 45 so that the bracket part 55 and the curved board 68 may each contact | abut. Although not specifically shown, the presser roller 53 incorporates a drive device 58 (not shown here. Refer to FIG. 19 described later. Hereinafter, appropriately described as a presser roller hydraulic motor 58) in the body. The drive device (not shown) rotates the crushed wood on the feed conveyor 11 that is pressed in the direction of rolling on the transport surface 39 of the feed conveyor 11 at the same circumferential speed as the transport speed of the crushed wood. In cooperation with the feed conveyor 11, it is introduced into the crushing device 12.

  The crushing device 12 described above is mounted on a substantially central portion in the longitudinal direction of the main body frame 36, and as shown in FIGS. 3 and 11, a crushing rotor 61 that rotates at high speed in the crushing chamber 60, and the crushing rotor 61 The first anvil 62 and the second anvil 63 are arranged so as to face each other in the rotation direction (forward rotation direction, clockwise direction in FIGS. 3 and 11). Although details will be described later, the first and second anvils 62 and 63 are configured to be rotatable so as to be retracted in a direction following the normal rotation direction of the crushing rotor 61 when, for example, excessive impact is applied. (See FIG. 11 and the like).

  The crushing rotor 61 is rotatably supported by a bearing (not shown) provided on, for example, a side cover 45 of the crushing device 12 (or a support member (not shown) provided separately on the main body frame 36). The part is provided with a plurality of support members 64 and crushing bits (impact plates or crushing blades) 65 attached to the support members 64, respectively. The crushing bit 65 is disposed such that the blade surface thereof precedes the support member 64 when the crushing rotor 61 rotates in the forward rotation direction. Further, each crushing bit 65 is fixed to the support member 64 with a bolt 66 or the like, and can be easily replaced even when worn. In FIG. 10, reference numeral 67 denotes a driving device that rotationally drives the crushing rotor 61 (hereinafter, appropriately described as a crushing device hydraulic motor 67). It is fixed to the side cover 45 by bolts or the like, and its output shaft is connected to the rotating shaft of the crushing rotor 61 via a coupling.

  The crushing chamber 60 described above is provided with respect to the crushing rotor 61, respectively, on the curved plate 68 provided on the upper side, and on the front side and the lower side, respectively, and opened with a diameter that sets the particle size of the crushed wood (wood chips). The first screen 69 and the second screen 70 having a large number of holes are generally defined, and the rear side thereof is released as a crushed wood introducing portion. The curved plate 68 is attached to the curved portion of the arm portion 54 of the presser conveyor device 13 as described above, and is configured to move with the up and down swinging motion of the presser conveyor device 13. Similar to the curved plate 68, the first and second screens 69, 70 are arcuate so as to substantially follow the rotation trajectory of the crushing rotor 61 with a predetermined gap between the first and second screens 69, 70, respectively, with the crushing bit 65. Each is formed and movable (details will be described later).

FIGS. 12 and 13 are diagrams illustrating the details of the movable mechanism by extracting the configuration in the vicinity of the first anvil 62 and the first screen 69, and FIG. 14 is a sectional view taken along arrow XIV-XIV in FIG. In the figure, the same reference numerals are given to the same parts as those in the previous drawings, and the description will be omitted.
12 to 14, reference numeral 71 denotes an arm to which the first anvil 62 is attached. The arm 71 is provided in a pair in the width direction (left and right direction in FIG. 14), and includes two rotating shafts 72 and 73 and a beam. 74. For example, one rotation shaft 72 is supported by a bearing 75 provided on the outer wall surface of the crusher side cover 45 (see FIG. 10), so that the rotation shaft 72 can be rotated as a fulcrum. It has become a structure. The directions of the rotation shafts 72 and 73 are substantially parallel to the rotation axis of the crushing rotor 61, respectively.

  The arm 71 is connected to a support member 76 whose front end is fixed to the crusher side cover 45 via a shear pin 77, so that the first anvil 62 is in a crushing operation (for example, in the state of FIG. 3). The curved plate 68 projects in the circumferential direction (the circumferential direction of the crushing rotor 61) on one side (the lower side in FIG. 12) and on the inner side of the curved plate 68 in the radial direction (the radial direction of the crushing rotor 61). It is fixed and held in such a posture. Therefore, when an impact load exceeding the allowable limit of the shear pin 77 is applied to the first anvil 62, the shear pin 77 is broken, the restraint of the arm 71 is released, and the arm 71 is retracted from the crushing chamber 60. And damage to each part is prevented.

  At this time, the rotation operation of the arm 71 is detected by, for example, a sensor that detects the rotation of the rotation shaft 72, and when the rotation of the arm 71 is detected by this sensor, the controller for driving the crushing rotor 61 is not illustrated. A command signal for stopping 67 is output.

  Reference numeral 78 denotes a stopper fixed to, for example, the crusher side cover 45 (or a support member (not shown) separately provided on the main body frame 36). The stopper 78 prevents interference between the arm 71 and other components. In order to prevent this, the rotation range of the arm 71 in the retracting direction of the first anvil 62 is limited.

  Reference numeral 80 denotes a frame-type screen support member (banana plate) that presses and holds the first screen 69 against the arm 71 from the outer peripheral side, and this screen support member 80 is arranged on one side (in the circumferential direction of the crushing rotor 61) ( The lower end in FIG. 12 is connected to the arm 71 via the previous rotation shaft 73. Further, the other end portion in the circumferential direction of the screen support member 80 is connected to the beam 74 through the hydraulic cylinder 81. Both ends of the hydraulic cylinder 81 are rotatably connected to the screen support member 80 and the beam 74 via pins, respectively, and the screen support member 80 rotates relative to the arm 71 as the hydraulic cylinder 81 expands and contracts. Move. That is, by contracting the hydraulic cylinder 81, the screen support member 80 is separated from the first screen 69, and the first screen 69 can be easily replaced. In FIGS. 10 and 11, 82 is an opening for drawing out and inserting the first screen 69 provided on the crusher side cover 45 in consideration of the replacement work of the first screen 69, which is not particularly shown. For example, a bolt detachable cover or the like is attached to the opening 82.

  In FIG. 14, reference numeral 85 denotes a lock mechanism for the screen support member 80. The lock mechanism 85 has a bracket 86 in a fixed relationship with the arm 71, and a bottom side end portion fixed to the bracket 86 in the width direction (left and right in FIG. 14). The lock cylinder 87 provided in the direction), taper blocks 88 and 89 having taper portions fixed to the rod side end of the lock cylinder 87 and the screen support member 80 and engaged with each other; And a guide member 90 that guides the sliding operation of the taper block 88.

  When the first screen 69 is sandwiched between the screen support member 80 and the arm 71, the taper block 88 in a fixed relationship with the arm 71 has a screen support member 80 from the outside in the radial direction (the radial direction of the crushing rotor 61). The taper block 89 is engaged with the taper block 89. That is, when the first screen 69 is held, the lock cylinder 87 is extended and the taper blocks 88 and 89 are engaged, so that the rotation of the screen support member 80 is restricted, and the first screen 69 is It is firmly fixed and held at a position (position shown in FIG. 3) where the crushing chamber 60 holding the crushing work is fixed. As described above, when replacing the first screen 69 by rotating the screen support member 80 by retracting the hydraulic cylinder 81, the lock cylinder 87 is first retracted and the engagement of the taper blocks 88 and 89 is released. The unlocked state is shown in FIG. 15 in correspondence with FIG. In the present embodiment, the lock mechanisms 85 are provided on both sides of the first screen 69 in the width direction (left and right direction in FIG. 14), but either one may be omitted if only one side is sufficient.

  Returning to FIGS. 3 and 10 to 11, reference numeral 91 denotes a frame-type arm to which the second anvil 63 is attached. The arm 91 is, for example, the outer wall surface (or the main body frame 36) of the crusher side cover 45 (see FIG. 10). A rotation shaft (not shown) is supported by a bearing 92 provided on a support member (not shown) provided separately above, and is configured to be rotatable about the rotation shaft. The direction of the rotation axis is substantially parallel to the rotation axis of the crushing rotor 61.

  The arm 91 is connected to a support member 93 whose front end is fixed to the crusher side cover 45 via a shear pin 94, so that the second anvil 63 is in a crushing operation (for example, in the state of FIG. 3). The first screen 69 projects in the circumferential direction (the circumferential direction of the crushing rotor 61) on one side (the lower side in FIG. 3) and inward in the radial direction (the radial direction of the crushing rotor) from the inner wall surface of the first screen 69. Fixed and held in posture. Therefore, when an impact load exceeding the allowable limit of the shear pin 94 is applied to the second anvil 63, the shear pin 94 is broken, the restraint of the arm 91 is released, and the arm 91 is retracted from the crushing chamber 60. And damage to each part is prevented.

  At this time, the rotation operation of the arm 91 is detected by, for example, a sensor that detects the rotation of the rotation shaft, and when the rotation of the arm 91 is detected by this sensor, the controller for driving the crushing rotor 61 is not illustrated. A command signal for stopping 67 is output.

  A stopper 95 is fixed to, for example, the crusher side cover 45 (or a support member (not shown) provided separately on the main body frame 36). The stopper 95 interferes with the arm 91 and other components. In order to prevent this, the rotation range of the arm 91 in the retracting direction of the second anvil 63 is limited.

FIG. 16A to FIG. 16C are diagrams showing the details of the movable mechanism extracted from the configuration around the second screen 70 described above. In this figure, the same parts as those in the previous drawings are the same. Reference numerals are assigned and description is omitted.
In FIG. 16, reference numeral 97 denotes a press plate for the second screen 70, and the press plate 97 is formed so that the outer peripheral portion thereof substantially coincides with the curvature of the inner wall surface of the second screen 70. 16A), for example, the inner wall surface of the second screen 70 is in contact with the inner wall surface of the crusher side cover 45 (or a support member (not shown) provided separately on the main body frame 36). It is fixed with bolts etc. so as to contact. A frame-type screen support member (banana plate) 98 holds the second screen 70 by pressing it against the presser plate 97 from the outer peripheral side. The screen support member 98 has a rotating shaft 99 provided at one end (left side in FIG. 16) in the circumferential direction (circumferential direction of the crushing rotor 61) provided separately on the crusher side cover 45 (or on the main body frame 36). It is supported by a bearing 100 fixed to a support member (not shown) and is configured to rotate in the vertical direction.

  The other end in the circumferential direction of the screen support member 98 is connected to a support member 102 fixed to the outer wall surface of the crusher side cover 45 with bolts or the like via a hydraulic cylinder 101. Both ends of the hydraulic cylinder 101 are rotatably connected to the screen support member 98 and the support member 102 via pins, respectively, and the screen support member 98 moves the rotation shaft 99 along with the expansion / contraction operation of the hydraulic cylinder 101. Rotates to a fulcrum. Accordingly, by extending the hydraulic cylinder 101, the screen support member 98 is separated from the press plate 97, and the second screen 70 placed on the screen support member 98 can be easily replaced. 10 and 11, reference numeral 103 denotes a notch for drawing out and inserting the second screen 70 provided on the crusher side cover 45 in consideration of the replacement work of the second screen 70. Although not provided, for example, a bolt detachable cover or the like is attached to the notch 103.

  Reference numeral 105 denotes a lock mechanism for the screen support member 98. The lock mechanism 105 includes a bracket 106 fixed to the outer wall surface of the crusher side cover 45, and a bottom side end portion fixed to the bracket 106 in the front-rear direction (see FIG. 16 and the taper blocks 108 and 109 having taper portions fixed to the rod side end of the lock cylinder 107 and the screen support member 98 and engaged with each other, and a crusher side cover And a guide member 110 that is fixed to the outer wall surface of 45 by a bolt or the like and guides the sliding operation of the taper block 108 accompanying the expansion and contraction operation of the lock cylinder 107.

  When the second screen 70 is sandwiched between the screen support member 98 and the pressing plate 97, the taper block 108 is provided on the screen support member 98 from the outside in the radial direction (the radial direction of the crushing rotor 61). Engage with. As a result, when the second screen 70 is held, the lock cylinder 107 is extended and the taper blocks 108 and 109 are engaged, so that the rotational movement of the screen support member 98 is restricted, and the second screen 70 is The crushing chamber 60 having crushing work is firmly fixed and held at a position where the crushing chamber 60 is determined (position shown in FIG. 16A). Therefore, when replacing the first screen 69 by rotating the screen support member 98 by extending the hydraulic cylinder 101 as shown in FIG. 16C, first, as shown in FIG. The operation is performed after the taper blocks 108 and 109 are disengaged. The state around the crushing device 12 at the time of unlocking is shown in FIG. The lock mechanism 105 is preferably provided on both sides of the second screen 70 in the width direction (for example, the direction orthogonal to the middle sheet surface in FIG. 16A), but either one may be omitted if only one side is sufficient.

  Returning to FIGS. 1 and 2, the discharge conveyor 3 has a discharge side (front side, right side in FIGS. 1 and 2) portion supported by suspension by a support member 112 that protrudes from the power unit 4. . The opposite side (rear side, left side in FIGS. 1 and 2) is supported by being suspended from the main body frame 36 via a support member 113. Thereby, the discharge conveyor 3 passes below the power unit 4 from the lower side of the crushing device 61, and is disposed in an upward inclination outward from the front side of the wood crusher. 114 is a frame of the discharge conveyor 3, and 115 is a conveyor belt (not shown) wound between driving wheels (not shown) and driven wheels (not shown) provided at both ends in the longitudinal direction of the frame 114. It is the conveyor cover provided so that it might cover. Reference numeral 116 denotes a driving device (hereinafter referred to as a discharge conveyor hydraulic motor 116 as appropriate) that rotationally drives the driving wheels 115. By rotating the driving device 116, the conveyor belt is circulated between the driving wheels and the driven wheels. It is designed to drive.

  The power unit 4 is mounted on the other end in the longitudinal direction of the main body frame 36 (the right side in FIGS. 1 and 2) via a support member 117. A driver's seat 118 is provided in a compartment on the rear side of the power unit 4 and on one side in the width direction (lower side in FIG. 2). Reference numeral 119 denotes an operation lever for driving operation provided in the driver's seat 118, and 120 denotes an operation panel for performing other operations, settings, monitoring, and the like. In this example, the operation panel 120 is provided on the side of the machine body so that the operator can easily operate from the ground, but may be provided on the driver's seat 118.

  The operation panel 120 receives operation signals from the operation unit of the operation panel 120 and detection signals from sensors provided in each unit, and controls the flow of pressure oil to each hydraulic actuator according to these input signals. A control device 121 (see the next FIG. 18) that outputs a command signal to the solenoid valve, a display signal to the operation panel 120, and manages operation data and the like is incorporated.

FIG. 18 is a block diagram illustrating a schematic configuration of the control device 121.
In FIG. 18, reference numeral 122 denotes an A / D converter that is a signal input unit. Through this A / D converter 122, detection signals from sensors provided in various places and signals from the operation unit of the operation panel 120 are displayed. An operation signal is input and converted into a digital signal. 123 is a read-only memory (ROM) that stores a program of a predetermined control procedure and constants necessary for control, 124 is a timer that measures time, 125 is a command stored in the ROM 123, etc. This is a central processing unit (CPU) that calculates signals and display signals on the display unit of the operation panel 120. 126 is a random access memory (RAM) that temporarily stores the calculation results of the CPU 125 and numerical values during the calculation, and 127 is a D / A converter that converts the command signal calculated by the CPU 125 into an analog signal and outputs the analog signal to a corresponding device. It is.

  Although not specifically shown, the control device 121 is also provided with a memory and the like, in which the detection signals from various sensors or operation data calculated based on the signals are stored. Is done. The stored data can be output to a display unit or an external device in accordance with a predetermined operation on the operation unit of the operation panel 120.

  Here, the hydraulic actuators such as the traveling body 1, the discharge conveyor 3, the feed conveyor 11, the crushing device 12, the presser roller 53, the hydraulic cylinders 81 and 101, the lock cylinders 87 and 107, etc. A driven member is configured to be driven by a hydraulic drive device provided in the wood crusher.

FIG. 19 is a hydraulic circuit diagram showing the overall configuration of the hydraulic drive device provided in the embodiment of the wood crusher of the present invention. In this figure, the same parts as those in the previous figures are denoted by the same reference numerals. The description is omitted.
In FIG. 19, reference numerals 130 and 131 denote variable displacement first and second hydraulic pumps driven by an engine (not shown), and 132 denotes left and right traveling hydraulic motors 8L and 8R and a crusher hydraulic motor 67. 1 is a first control valve device that controls the flow of pressure oil from the first and second hydraulic pumps 130 and 131 (details will be described later).

  133 and 134 are fixed displacement type third hydraulic pumps and pilot pumps driven by an engine (not shown), 135 is a hydraulic actuator of an auxiliary machine other than the above (here, feed conveyor hydraulic motor 49, presser roller hydraulic motor 58) A second control valve device (details will be described later) for controlling the flow of pressure oil from the third hydraulic pump 133 supplied to the discharge conveyor hydraulic motor 116 and the second screen hydraulic cylinder 101). is there. 136 is an operation valve device, 137L and 137R are left and right travel operation lever devices provided with left and right travel operation levers 119L and 119R provided in the driver's seat 118, and 138 and 139 are first and second hydraulic pumps. This is a regulator device that adjusts the discharge flow rates and torques 130 and 131, respectively. In this example, the hydraulic cylinders 81, 87, and 107 described above are omitted for the purpose of preventing congestion, but the hydraulic circuit is the same as that of the second screen hydraulic cylinder 101.

  The first control valve device 132 includes first and second crushing device control valves 140 and 141 connected to the crushing device hydraulic motor 67 and a left running control valve 142 connected to the left running hydraulic motor 8L. And a right travel control valve 143 connected to the right travel hydraulic motor 8R.

  The first and second crushing device control valves 140 and 141 and the left and right traveling control valves 142 and 143 are respectively connected to the crushing device hydraulic motor 67 and the left and right traveling hydraulic motors 8L and 8R. This is a three-position switching valve that can control the flow rate. Among these, the first crushing device control valve 140 and the left traveling control valve 142 are arranged in the center bypass line 145 connected to the discharge pipe 144 of the first hydraulic pump 130 from the upstream side to the left traveling control valve 142, The first crushing device control valves 140 are arranged in this order. A pump control valve 146 is provided on the most downstream side of the center bypass line 145. On the other hand, the second crushing device control valve 141 and the right traveling control valve 143 are connected to the right bypass control valve 143 from the upstream side in the center bypass line 148 connected to the discharge pipe 147 of the second hydraulic pump 131, The second crushing device control valves 141 are arranged in this order. A pump control valve 149 is provided on the most downstream side of the center bypass line 148.

  The left and right traveling control valves 142 and 143 are center bypass type pilot operation valves, which are operated by pilot pressure generated by the pilot pump 134 and reduced to a predetermined pressure by the left and right operation lever devices 137L and 137R. It has come to be. The operation lever devices 137L and 137R respectively include operation levers 119L and 119R and a pair of pressure reducing valves 150a and 150b and 151a and 151b that output pilot pressures corresponding to the operation amounts. The pilot pressure corresponding to the operation amount is guided to the left / right travel control valves 142, 143 via a pilot line (not shown), whereby the left / right travel control valves 142, 143 are switched to the left. The right traveling hydraulic motors 8L and 8R are driven.

  The control valves 140 and 141 for the first and second crushing devices are generated by the pilot pump 134 and reduced to a predetermined pressure by the crushing device normal rotation solenoid control valve 152 and the crushing device reverse rotation solenoid control valve 153 in the operation valve device 136. The pilot pressure is operated. When the forward drive signal is input from the control device 121 described above, the crushing device forward solenoid control valve 152 is switched to the communication position, and the crushing device reverse solenoid control valve 153 is in the shut-off position (position shown in FIG. 19). The pilot pressure from the pilot pump 134 is guided to the first and second crushing device control valves 140 and 141 via an introduction pipe (not shown), and the first and second crushing device control valves 140 and 141 are The position is switched to the forward rotation switching position. As a result, the crusher hydraulic motor 67 is driven in the forward direction. On the other hand, when a reverse drive signal is input from the control device 121, the crushing device reverse solenoid control valve 153 is switched to the communication position, and the crushing device normal rotation solenoid control valve 152 is shut off (position shown in FIG. 19). Thus, the first and second crushing device control valves 140 and 141 are switched to the reverse switching position, and the crushing device hydraulic motor 67 is driven in the reverse rotation direction.

  Here, the above-described operation valve device 136 is provided with a solenoid control valve 154 that shuts off the pilot pilot pressure from the pilot pump 134 to the operation lever devices 137L and 137R. This solenoid control valve 154 is switched to the shut-off position when the travel lock signal input from the control device 121 is turned on, shuts off the pilot original pressure from the pilot pump 134, and the left and right by the operation lever devices 137L and 137R. The above operation of the traveling control valves 142 and 143 is invalidated. On the other hand, when the travel lock signal input from the control device 121 is turned off, the communication position (position shown in FIG. 19) is switched, and the operation of the left / right travel control valves 142, 143 by the operation levers 119L, 119R is performed. Valid. Therefore, by storing a program for turning on the traveling lock signal during the crushing operation, the left and right traveling hydraulic motors 8L and 8R are prevented from being driven by the operation of the operation levers 119L and 119R during the crushing operation. Safe crushing work becomes possible.

  The pump control valves 146 and 149 have a function of converting the flow rate into pressure, and feed back the amounts of pressure oil flowing into the pump control valves 146 and 149 from the center bypass lines 145 and 148 to the regulator devices 138 and 139, respectively. To work.

  That is, when both the first crushing device control valve 140 and the left travel control valve 142 are in the neutral position, the required flow rate required for the first hydraulic pump 130 is reduced, and therefore, the first crushing device control valve 140 is discharged from the first hydraulic pump 130. Most of the pressure oil is introduced into the pump control valve 146 via the center bypass line 145 as an excessive flow rate, and the set relief pressure of the relief valve 146a of the pump control valve 146 is lowered. As a result, the pilot pressure guided to the regulator device 138 via the conduit 155 becomes relatively low, and the tilt of the first hydraulic pump 130 is reduced by the regulator device 138 and the discharge flow rate is reduced.

  On the other hand, when the control valves 140 and 142 are in the open state, the required flow rate required for the first hydraulic pump 130 increases, and the pressure oil flowing through the center bypass line 145 is reduced by the flow rate flowing toward the hydraulic motors 8L and 67. Therefore, the excessive flow rate becomes relatively small. As a result, the set relief pressure of the relief valve 146a increases, the pilot pressure guided to the regulator device 138 via the conduit 155 becomes relatively high, and the tilt of the first hydraulic pump 130 is increased by the regulator device 138. The discharge flow rate increases.

  Similarly, when both the second crushing device control valve 141 and the right traveling control valve 143 are in the neutral position, the set relief pressure of the relief valve 149a of the pump control valve 149 becomes low, and the regulator device is connected via the conduit 156. Since the pilot pressure guided to 139 becomes relatively low, the regulator device 139 reduces the tilt of the second hydraulic pump 131 and reduces the discharge flow rate. When the control valves 141 and 143 are in the open state, the set relief pressure of the relief valve 149a is increased, and the pilot pressure guided to the regulator device 139 via the conduit 156 is relatively increased. As a result, the tilt of the second hydraulic pump 131 is increased by the regulator device 139 and the discharge flow rate is increased.

  With such a circuit configuration, the first and second hydraulic pressures are obtained so that the discharge flow rates corresponding to the required flow rates of the first and second crushing device control valves 140 and 141 and the left and right traveling control valves 142 and 143 are obtained. So-called negative control is performed to control the discharge flow rate of the pumps 130 and 131.

  Here, the operation valve device 136 described above is provided with a solenoid control valve 157 that shuts off the pilot pilot pressure from the pilot pump 134 to the pump control valves 146 and 149. The solenoid control valve 157 is switched to the communication position when the input signal from the control device 121 is turned on, and guides the pilot original pressure from the pilot pump 134 to the pump control valves 146 and 149 to enable the negative control. On the other hand, when the input signal from the control device 121 is turned off, it is switched to the shut-off position (position shown in FIG. 19), shuts off the pilot original pressure to the pump control valves 146 and 149, and invalidates the negative control. In this case, the pilot pressure acting on the regulator device 138 becomes the tank pressure, and the discharge flow rate of the first hydraulic pump 130 becomes the minimum value.

  Further, the operation valve device 136 includes a solenoid control valve 158 that communicates and blocks a pipe line between the pump control valve 146 and the regulator device 138 of the first hydraulic pump 130, and a pilot source from the pilot pump 134 to the regulator device 138. A solenoid control valve 159 that communicates and shuts off a conduit that guides pressure is provided. These solenoid control valves 158 and 159 are switched to the cutoff position and the communication position, respectively, when the input signal from the control device 121 is turned ON. Thus, the solenoid control valve 158 blocks the pump control valve 146 and the regulator device 138, the solenoid control valve 159 communicates between the pilot pump 134 and the regulator device 138, and the pilot pressure from the pilot pump 134 is controlled by the solenoid control valve. 159 and the solenoid control valve 158 are directly guided to the regulator device 138, and the discharge flow rate of the first hydraulic pump 130 becomes the maximum value. On the other hand, when the input signal from the control device 121 is turned OFF, each is switched to the communication position and the blocking position (state shown in FIG. 19). Thereby, the pilot pressure from the pump control valve 146 is guided to the regulator device 138, and the negative control is validated.

  With such a circuit configuration, the discharge flow rate of the first hydraulic pump 130 can be forcibly increased or decreased regardless of the operating state of the crushing device hydraulic motor 67 and the left and right traveling hydraulic motors 8L and 8R. ing.

  The second control valve device 135 includes a feed conveyor switching valve 160 connected to the feed conveyor hydraulic motor 49, a press roller switching valve 161 connected to the press roller hydraulic motor 58, and a discharge conveyor hydraulic motor 116. And a second screen switching valve 163 connected to the second screen hydraulic cylinder 101. As described above, in FIG. 19, the hydraulic circuit portions corresponding to the hydraulic cylinders 81, 87, 107, etc. are not shown.

  The switching valves 160 to 163 are appropriately constituted by two-position switching valves or three-position switching valves that can control the flow of pressure oil to the corresponding hydraulic actuators 49, 58, 116, 101 in response to command signals from the control device 121. Thus, pressure oil is supplied from the third hydraulic pump 133. These switching valves 160 to 163 are, from the upstream side in the center bypass line 165 connected to the discharge pipe 164 of the third hydraulic pump 133, a feed conveyor switching valve 160, a pressing roller switching valve 161, and a discharge conveyor switching. The valve 162 and the second screen switching valve 163 are arranged in this order. A pressure compensation valve 166 is provided on the most downstream side of the center bypass line 165, and the maximum pressure of the center bypass line 165 is limited.

  When the operator operates a changeover switch (not shown) provided on the operation panel 120 (or a remote operation switch (remote control)), for example, a command signal corresponding to an operation from the control device 121 is turned ON. Thus, the communication position corresponding to the operation is switched. As a result, the corresponding hydraulic motor is switched and supplied from the direction corresponding to the operation, and is driven by the pressure oil not less than the predetermined pressure via the pressure compensation valve 167, respectively. That is, for example, when an operator switches a forward / reverse switching switch (not shown) of the feed conveyor 11 to forward rotation and presses a drive button (not shown), a command corresponding to forward drive from the control device 121. The signal is turned ON, and the feed conveyor switching valve 160 is switched to the forward rotation position. As a result, the pressure oil from the third hydraulic pump 133 is introduced into the feed conveyor hydraulic motor 49, and the feed conveyor hydraulic motor 49 is moved forward. Driving in the rolling direction, the feed conveyor 11 is driven in the forward direction. In this embodiment, in addition to the feed conveyor switching valve 160, the pressing roller switching valve 161 and the second screen switching valve 163 are also three-position switching valves. Pressure oil is supplied from both directions to the motor 58 and the second screen hydraulic cylinder 101, and the presser roller 53 can be driven in the forward and reverse directions, or the second screen hydraulic cylinder 101 can be driven in the expansion and contraction direction. .

  Since the discharge conveyor switching valve 162 is a two-position switching valve, pressure oil is supplied to the discharge conveyor hydraulic motor 116 from a single direction so that the discharge conveyor hydraulic motor 116 is driven in a single direction. It has become. However, the present invention is not limited to this, and the discharge conveyor switching valve 162 may be a three-position switching valve so that the discharge conveyor hydraulic motor 116 can be driven in the forward and reverse directions.

  On the other hand, when a command signal from the control device 121 is turned off by an operator pressing a stop button (not shown) provided on the operation panel 120 (or a remote operation button (remote control)), the switching valves 160 to 163 are turned on. Switching to the shut-off position (position shown in FIG. 19) stops the corresponding hydraulic motor.

Next, the operation and action of the wood crusher according to the present embodiment having the above configuration will be described.
For example, when wood to be crushed is introduced into the hopper 10 with an appropriate work tool such as a grapple of a hydraulic excavator, the wood to be crushed is guided by the expanding portion 17 of the hopper 10 and placed on the carrier 42 of the feed conveyor 11. Then, it is transported in a substantially horizontal direction toward the front side of the wood crusher by a transport body 42 that is circulated and driven while being guided by the side wall body 16 of the hopper 10.

  When the wood to be crushed on the feed conveyor 11 is conveyed to the vicinity of the press conveyor device 13, it enters the lower part of the press roller 53 of the press conveyor device 13 and pushes up the press conveyor device 13. Thereby, the wood to be crushed on the feed conveyor 11 is introduced into the crushing chamber 60 while being pressed and held between the feed conveyor 11 by the action of the weight of the press conveyor device 13. Thereby, at the time of crushing, the to-be-crushed wood protrudes into the crushing chamber 60 in a cantilevered manner with the portion sandwiched between the presser roller 54 and the feed conveyor 11 as a fulcrum, and this protruding portion of the crushing rotor 61 rotates. When the crushing bit 65 collides, the primary crushing is relatively roughly performed. The pieces of crushed wood that have been primarily crushed go around the space in the crushing chamber 60 on the outer periphery side of the crushing rotor 61 in the rotation direction of the crushing rotor 61, and sequentially collide with the first and second anvils 62 and 63. , The impact is further shattered.

  Of the pieces of wood that are being crushed as described above, those that are larger than the holes provided in the first and second screens 69 and 70 continue to circulate in the crushing chamber 60, By colliding with the first and second anvils 69 and 70 again, they are further crushed. Thus, when pulverized to a particle size that passes through the holes of the first and second screens 69, 70, crushed wood (wood chips) passes through the holes of the first or second screens 69, 70, It is discharged from the crushing device 12.

  The crushed wood (wood chips) discharged from the crushing device 12 falls on the conveyor belt 115 of the discharge conveyor 3 that is circulated and driven through a chute (not shown), and moves forward (right side in FIGS. 1 and 2). And are discharged as recycled products.

  In the crushing operation performed as described above, there are cases where a foreign material such as hard wood or metal that is difficult to crush is thrown into the hopper 10. In such a case, it is necessary to stop the conveyance of the wood to be crushed to the crushing device 12 and take out the wood and foreign matter from the hopper 10.

  At this time, in the above-described prior art, the rear wall body 14 of the hopper 10 has a structure that is higher than the transport surface 39 of the feed conveyor 11, so that the feed conveyor 11 is driven in the reverse direction and the rear of the hopper 10 Even if wood or foreign matter that is difficult to crush is to be discharged, it is blocked by the rear wall body 14 and cannot be discharged from the hopper 10. For this reason, an operator has to enter the hopper 10 and manually remove wood and foreign matter, which requires time and labor.

  On the other hand, in this embodiment, the conveyance surface 39 of the conveyance body 42 of the feed conveyor 11 and the upper end part 14a of the rear wall body 14 of the hopper 10 are comprised at substantially the same height. As a result, when hard wood or metal or other foreign matter that is difficult to crush is put into the hopper 10 as described above, the hard wood or foreign matter is discharged from the rear of the hopper 10 by driving the feed conveyor 10 in the reverse direction. Is possible. At this time, the rubber plate 38 suspended from the support member 37 on the upper portion of the rear wall body 14 is elastically deformed by being pushed by the wood or foreign matter conveyed rearward by the conveyor 11 (rearward). Therefore, it does not hinder the discharge of these timbers and foreign objects. Therefore, it is possible to easily take out wood and foreign matters that are difficult to be crushed from the hopper 10 as compared with the above-described conventional technique in which an operator has to enter the hopper 10 and manually take out wood and foreign matters. As a result, since the time for interrupting the crushing operation for removing the foreign matter can be shortened, the production efficiency of the crushed material can be improved.

  For example, in the case where the upper end portion 14a of the rear wall body 14 is lower than the transport surface 39 of the feed conveyor 11, it is caught by the transport body 42 and wraps around the lower side of the feed conveyor 11 and the feed conveyor 11 and the hopper bottom wall body. There is a risk that a piece of wood or the like that is carried rearward through the gap with the guide 18 and wound up by the guide member 35 behind the hopper 10 will pass over the rear wall body 14 and leak to the rear of the hopper 10 and scatter the surroundings. However, as shown in the present embodiment, the conveying surface 39 of the feed conveyor 11 and the upper end portion 14a of the rear wall body 14 are set to have substantially the same height, so that they are caught by the conveying body 42 as described above and placed behind the hopper 10. It is possible to prevent the carried wood pieces and the like from leaking beyond the rear wall body 14.

Furthermore, according to the present embodiment, the rubber plate 38 is suspended above the rear wall body 14 by the support member 37 so that the lower end portion thereof is in contact with the upper end portion of the rear wall body 14 (may be through a slight gap). To support. Thereby, at the time of a normal crushing operation | work, the crushing piece etc. which fly from the crushing apparatus 12 side can be received by the rubber plate 38, and it can prevent leaking outside from the back of the hopper 10. FIG. On the other hand, when hard wood or foreign matter is conveyed backward by the feed conveyor 11 as described above, the rubber plate 38 is flexibly deformed by being pushed by the wood or foreign matter (bends backward). It does not prevent the wood and foreign matter from being discharged to the rear of the hopper via the rear wall body 14. In this way, according to the present embodiment, the rubber plate 38 can prevent leakage of crushed pieces and the like during normal crushing work while not interfering with foreign matter discharge.

  In addition, in the above, although the presser conveyor apparatus 13 mentioned above was employ | adopted as a press introduction means of to-be-crushed wood, it is not restricted to this, For example, an endless member (a belt, a chain, etc.) between a drive roller and a driven roller You may use what wound. Further, the operation at the time of pressing may be configured to move up and down instead of rotating. Furthermore, although the bottomed hopper 10 is used, it may be replaced with a bottomless one. In these cases, the same effect is obtained.

  Moreover, although the wood crusher provided with what is called an impact crusher which attached the cutter (crushing bit 65) to the outer peripheral part of the crushing rotor 61 as an example was demonstrated as an example, it is not restricted to this, Other crushing apparatuses, for example, parallel A crushing device (such as a biaxial shearing machine including a so-called shredder) that has a cutter on a shaft arranged on the shaft and reversely rotates each other, and a roll-shaped rotating body (rotor) for crushing blades A rotary crushing apparatus (such as a six-axis crusher including a roll crusher) that rotates the pair in opposite directions and crushes the object to be crushed between the rotating bodies. Also, the present invention can be applied to a wood crusher equipped with a so-called wood chipper that makes the object to be crushed into chips. In these cases, the same effect as described above can be obtained.

  Furthermore, although the case where the present invention is applied to a wood crusher capable of traveling on its own has been described as an example, the present invention is not limited thereto, and it can be lifted and transported by a mobile wood crusher that can be towed and run, for example, a crane. Needless to say, the present invention may be applied to a portable wood crusher, and further to a stationary wood crusher arranged as a fixed machine in a plant or the like.

It is a side view showing the whole structure of one embodiment of the wood crusher of the present invention. It is a top view showing the whole structure of one embodiment of the wood crusher of the present invention. It is a side view showing the detailed structure inside the side cover of the crushing device vicinity with which one Embodiment of the wood crusher of this invention was equipped. It is a side view showing the detailed structure of the rear end vicinity provided in one embodiment of the wood crusher of this invention. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4 showing a detailed structure in the vicinity of a rear end of a hopper provided in an embodiment of the wood crusher of the present invention. It is the front view seen from the back of the hopper showing the detailed structure near the rear end of the hopper with which one embodiment of the wood crusher of the present invention was equipped. It is a VII-VII arrow sectional view in Drawing 6 showing the detailed structure of the rear end part of the feed conveyor with which one embodiment of the wood crusher of the present invention was equipped. It is detail drawing of the locking mechanism of the opening-and-closing part of the hopper with which one embodiment of the wood crusher of this invention was equipped. It is a figure showing the state by which the opening / closing part of the hopper with which one Embodiment of the wood crusher of this invention was equipped was open | released. It is a side view of the crushing device vicinity with which one Embodiment of the wood crusher of this invention was equipped. It is sectional drawing showing in detail the internal structure of the crushing device vicinity with which one Embodiment of the wood crusher of this invention was equipped. It is a figure showing the detail of those movable mechanisms which extracted the structure of the 1st anvil and 1st screen vicinity with which one Embodiment of the wood crusher of this invention was equipped. It is a figure showing the detail of those movable mechanisms which extracted the structure of the 1st anvil and 1st screen vicinity with which one Embodiment of the wood crusher of this invention was equipped. It is the XIV-XIV arrow directional cross-sectional view in FIG. 12 which extracts the structure of the 1st anvil and 1st screen vicinity with which one Embodiment of this invention was equipped, and shows the detail of those movable mechanisms. It is a figure showing the state at the time of lock release of the 1st screen with which one Embodiment of the wood crusher of this invention was equipped. It is a figure showing the detail of the movable mechanism which extracted the structure of the 2nd screen vicinity with which one Embodiment of the wood crusher of this invention was equipped. It is a figure showing the state of the crushing device periphery at the time of lock release of the 2nd screen with which one Embodiment of the wood crusher of this invention was equipped. It is a block diagram showing the schematic structure of the control apparatus with which one Embodiment of the wood crusher of this invention was equipped. It is a hydraulic circuit diagram showing the whole structure of the hydraulic drive unit with which one embodiment of the wood crusher of this invention was equipped.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Feed conveyor 12 Crusher 14 Rear wall body 16 Side wall body 36 Main body frame 37 Support member 38 Rubber plate (flexible member)
39 Conveying surface 40 Driving wheel 41 Driven wheel 42 Conveying body

Claims (1)

A main body frame, a crushing device provided on the main body frame, provided on one side in the longitudinal direction of the main body frame, wound around the driving wheel, the driven wheel, and the driving wheel and the driven wheel in the forward and reverse directions. A feed conveyor that has an endless transport body that is driven to circulate, transports the wood to be shredded to the crushing apparatus, side wall bodies that are provided on both sides in the width direction of the feed conveyor, and a rear side of the feed conveyor. In a wood crusher provided with a hopper having a rear wall body,
The crushing rotor that constitutes the crushing device has its axis of rotation arranged along the width direction of the main body frame so that the crushing bit provided on the outer periphery faces the to-be-crushed wood conveyed by the feed conveyor. ,
At the rear end of the hopper, a rear wall body that is substantially the same height as the transport surface of the transport body of the feed conveyor, a support member that is horizontally mounted between the side wall bodies above the rear wall body, and this support Hard wood supported by being suspended by a member, receiving crushed pieces flying from the crushing device side and preventing leakage from the rear of the hopper to the outside, and conveyed backward when the feed conveyor is reversed And a flexible member that allows discharge of foreign matter to the outside of the hopper ,
The timber crusher characterized in that the support members horizontally mounted between the side wall bodies are respectively attached to the upper portions of the left and right widened portions provided in a widened shape upward from the side wall bodies. .

Images